Mold for brick-machines.



PATENTED APR. 14, 1903.

H. J. FLOOD.

MOLD POR BRICK MACHINES.

APPLICATION FILED AUG. Z8, 1902.

No MODEL.

UNITED STATES PATENT OFFICE.

HARRY J. FLOOD, OF CHICAGO, ILLINOIS.

MOLD FOR BRICK-MACHINES.

SPECIFICATION forming part of Letters Patent N o. 725,619, dated April14, 1903.

Y No. 121.269.

To @ZZ whom it may con/cern.. y

Beit known that LHARRY J. FLOOD, a citizen of the United States,residing in'the city of Chicago, county of Cook, State of Illinois, haveinvented a new and useful Im provement in Molds for Brick-Machines, ofwhich the following is a specification.

My invention relates to molds for brickmachines and kindred machines forpressing material into form; and the objects of this invention are,first, to provide a mold the component parts whereof are rigidly heldt0- gether by means of bolts extending in trans,- verse directions;second, to provide means whereby the number and size of the molds maybereadily altered third, to provide selfadjusting means whereby thepressure of the end blocks on the end liners may be evenly distributedfrom top to bottom thereof, and, fourth, to provide means for separatelyadjusting the extremities of the end blocks for the purpose of truingthe mold and to insure a substantially equal pressure upon the two endliners of any specified mold'. I attain these objects by the mechanismillustrated in the accompanying drawings, in which- Figure 1 is a planView of the parts adjacent to and composing the mold. Fig..2 is a verltical section of the same, taken on the line 2 2, Fig. 1. Figs. 3, 4.,and 5 are vertical sectional views taken, respectively, on the lines 33, 4. 4, and 5 5, Fig. l.

Similar letters refer to similar parts throughout the several views.

The component parts of the mold are supported on the main-frame pieces aa. llhe front cross-block b and back cross-block c are substantiallysymmetrical in form and are provided with the recesses b' b' and c c',respectively, for receiving the extremities of the end blocks d d. Saidcross-blocks b and c are of massive proportions to alford great rigidityand strength and extend across the machine. At their ends saidcross-blocks have the extensions d', which form part of the recesses-band c' and are adapted to receive the set-screws h, hereinaftermentioned. Said recesses do not closely lit said end blocks d, butpermit an adjustment of the same in a transverse direction. The sideframes a a are apertured to loosely receive the cap-screws' lchamberedcross-blocks b and c.

Divided and this application iiled August 28. 1902. Serial (No model.)

a' a', so as to support said cross-blocks and at the same time permitthe adjustment thereof. Y

The front apron e and back apronfare bolted to the front and backcross-blocks b and c, respectively. Said cross-blocks are drawn firmlyto a bearingy upon the said end blocks in a front and rear direction bymeans of heavy bolts g g, which tit loosely in said cross-blocks. Bypreference said bolts pass through the en d blocks d, which are suitablyrecessed to loosely receive said bolts. In the transverse direction saidend blocks are forced inwardly toward the center of the machine by meansof the set-screws h h. The frame-pieces a are apertured to looselyreceive said set-screws, and the heads of said screws lie upon theoutside of said lframe-pieces, thereby permitting the adjustment of themold parts from the exterior of the machine. Said cross-blocks band care suitably drilled and tapped at the recesses b and c' for receivingsaid set-screws, while the side frames are apertured in such a manner asto receive said set-screws loosely. The tightening of saidset-screwsforces said end blocks firmly onto the mold-lining plates, asWill hereinafter appear.

The molds e' are formed by the end linersj and side liners c,whichconsist, preferably, of steel plates having polished inner faces. Thepartition-plates m lie between the side liners 7c and extend from one tothe other of the cross-blocks b and c. The extremities of thepartition-,plates m and side liners k and also the outward or rear sidesof the end liners j are mortised to it into the correspondingly- 1t isevident that when the bolts g are screwed tight the side liners andpartition-plates are prevented froin moving in a front and reardirection. The motion of the side liners and partition-plates in atransverse direction is prevented by the end blocks d, held by theset-screws h, the end liners j serving as distance-pieces to spreadsaidA side liners and preserve the proper width of mold. The pressure ofthe side liners lo against the end liners j holds the latter firmly inposition. It follows, therefore, that the strain upon the moldplates,dueto the tendency of the clay or other material to expand laterally undercompression', is taken up in a transverse direction by the blocks b andc, which are of ample proportions and are at the same time simple inconstruction. Moreover, the pressure upon the ends of the molds is alsotaken up by said blocks b and c, which, being drawn together by thebolts g, are subjected to a transverse or breaking strain. Consequentlythe moldtable is not only self-contained, but consists of but fourprincipal pieces-to wit, the end blocks d d and cross-blocks b and c.The setscrews z are located substantially midway of the height of theend blocks d and have but a slight bearing-surface thereon, and as aresult there is an even distribution from top to bottom of the pressureof the side liners against the end liners. The advantage in this is thatall parts of all the end liners are retained in position' undersubstantially the same pressure even though there be slight inequalitiesin the dimensions of said liners.

In brick-machines the plungers should accurately fit the molds, and forthis reason if in the present device the side liners 7c are displaced toany appreciable extent there is great danger of breakage. In the devicehere shown the two extremities of each end block d are separatelyadjustable by means of the respective set-screws h. This makes itpossible to true up the mold-liners to a sufcient degree to insure theproper working of the machine. 1

In operation when it is desired to alter the size of the mold or renewworn parts the screws h and bolts g are loosened sulcently to permit theend blocks vand cross-blocks to be backed off, sothat the mortised endand side liner may be removed. The size of the molds will be determinedby the thickness of said lining-plates.

I desire to direct attention to the fact that none of the main parts ofthe mold-table need to be removed for the renewal of liners and alsothat the width and number of molds may be altered. For example, afour-moldy machine may be converted into a two-mold or three-mold bysubstituting end liners of suitable length, because the mortising of theblocks b and c is uniform across the table, and it is the end linersacting as distancepieces that determine the lateral position of the sideliners and partition-plates.

What I claim as new, and desire to secure by Letters Patent, is-

l. A mold composed of cross-blocks, bolts for drawing said blockstogether in a front and rear direction; end blocks; and a setscrew ateach extremity of said end blocks for separately adjusting the saidextremities of said end blocks.

2. A mold composed of cross-blocks, bolts for drawing said blockstogether in a front and rear direction; end blocks; and a setscrewscrewing into each extremity of said cross-blocks for separately actingupon said end blocks; said set-screws being located approximately midwayof the height of said end blocks for the purpose described.

3. In a sectional mold, the combination of end liners, side liners, endblocks, crossblocks; bolts passing through said crossblocks in a frontand rear direction, eXtensions on said cross-blocks overlapping aportion of said end blocks, and a set-screw in each of said extensionsfor truing the molds.

4. In a sectional mold, the combination ot' cross-blocks, end blocks,mold-liners laterally inclosed within said blocks; main-frame piecessupporting said cross-blocks; and a screw for each extremity of said endblocks, said set-screws screwing into said cross-blocks in the directionof the length of said crossblocks, and said set-screws passing looselythrough said main-frame pieces whereby the heads of said set-screws areupon the outside of said main-frame pieces.

HARRY J. FLOOD.

Witnesses: y

H. E. CRANKSHAW, Guo. W. EULETTE.

